/Engine/Plugins/Runtime/Metasound/Source/MetasoundEngine/Public/MetasoundBuilderSubsystem.h
Returns graph input node by the given name if it exists, or an invalid handle if not found.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Audio|MetaSound|Builder", Meta=(ExpandEnumAsExecs="OutResult")) [FMetaSoundNodeHandle](API\Plugins\MetasoundEngine\FMetaSoundNodeHandle) FindGraphInputNode ( [FName](API\Runtime\Core\UObject\FName) InputName, [EMetaSoundBuilderResult](API\Plugins\MetasoundEngine\EMetaSoundBuilderResult) & OutResult )